Improvement in drills for seed-planters



2 SheetsSheet 1.

J.. P. KELLER.

SEED DRILL.

No. 105,810. Patented July 26,1870.

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JOHN '1 KELLER, or HAGERSTOWN, MARYLAND, assleuon To HIMSELF ANl WILLIAM nrnnenarr, or SAME'PL'AOE.

Letters Patent No. 105,810, dated J ilk 26, 1870.

iMPRbVBMENT IN- DRILLS FOR SBED-PLANTER S.

The Schedule referred to in these Letters Patent and'making' part of the same.

To all whom itmay'cmtcern: v

Be it known that I, J onn F. KELLER, of Hagerstown,"Washington county, State of Maryland, have invented new and useful Improvements in Spring- Shovels or Drills for Seed-Planters; and I do hereby declare the followingtobe anexact description of the same,'reference' being had to the accompanying draw ings,.and to the letters of reference marked thereon making apart of this specification.

The nature of myiuveution consists inthe arrange ment of the slide-block operating between the drag bars, (adjusted byaset-screwy) for regulating the position of the shovels to plow shallow or deeper. Also, the ch'eck-clevis for holding thespring bar in 'its proper place,'-wheu combined with the drag-bars as herein shown, v i I To enable others to make and use my invention,.l will proceed to describe its construction and operation.

A represents the} drag bars, with the shovel use. tached to therearend by, the screw-bolt G.

D isthe set-screw that holds the slide-block E in its place,the slide-blook-heing adjustable between the drag-bars, and movable hack and forward for the purpose of regulating the shovel to plow shallow or deeper, as may he requirecb s i l X G is a clevis, that is fastened to the drag-bars, is square shaped, and is intended as a 'cheok-clevis, to hold the springbarH ,to its place, the spring bar H being attached tothe center of the sliding block 111 and to the joints J J, so that, when the shovel strikes any ohstruction, the point of the shovel flies back, (as

show-n by the redjlinesjthe points J J and rear-end. of the springbar H -yielding to the pressure down ward between the drag-bars A A until the shovel has passed over the obstacle,-when the spiral spring K forces the spring bar H and joints upward ,and back to their place, where they are held by the cle'vis G, and, the shovel is again in its proper position for operation. And when the point of the shovel B is'required to be set to plow shallow, the slide-block E is moved and adjusted forward from the shovel, and,

when required to run deeper, the slide-blockis slightly and, to keep the spring bar H in its proper horizontal position.

Figure 2 is an additional drawing to show how the block E works on" a slot, P, and changes the angle of the hoe so as to plow deep or shallow.

What I claim as my invention, and desire to secure by Letters Patent, is-

The-slide-blook E, or its equivalent, working between orin the drag-bars, for changing the angle of v the hoe, so as to plow deep or shallow, as hereindescribed and for the purpose set forth.

' JOHN F. KELLER.

Witnesses Z. B. CLARK, WM. BUNBURY. 

